Search⌘ K
Home
Courses
Data Structures for Coding Interviews in C++

Solution: Reverse First k Elements of Queue

Explore how to reverse the first k elements of a queue by leveraging a stack in C++. This lesson helps you understand the step-by-step process to check constraints, use stack operations to reorder elements, and maintain the queue's integrity. You will gain practical knowledge of queue and stack interactions and analyze the solution's time and space complexity.

We'll cover the following...

Statement

Given a queue and a number k, reverse the order of the first k elements in queue. If k is less than 00, if k exceeds queue size, or if queue is empty, return NULL. Otherwise, return the modified queue.

Constraints:

  • 0≤0 \leq queue.length ≤103\leq 10^{3}
...